In vitro wear assessment of four brands of artificial teeth

Introduction: Wear resistance of artificial teeth has an important role in denture longevity. The purpose of this in vitro study was to evaluate wear resistance of four brands of artificial teeth.Materials and methods: In this in vitro study four brands of artificial teeth, including Apple, Yaghoot, Glamour and Ivoclar were used. Ten maxillary first premolars were selected from each set and were fixed in autopolymerizing acrylic resin. Wear test was performed for 1000 and 2000 cycles. Heights of the teeth were measured under a light microscope before and after wear cycles. Data were analyzed by ANOVA and Duncan tests (α = 0.05). Results: ANOVA showed that mean wear rate of the teeth in both 1000 and 2000 cycles had significant differences (p value < 0.001). According to Duncan test, except for Apple and Yaghoot, other groups had significant differences with each other (p value2 = 0.314), (p value1 = 0.289).Conclusion: It was concluded from the results of the present study that wear rate of Ivoclar teeth was significantly lower than that in other groups. Glamour, Yaghoot and Apple teeth showed the highest rate of wear, respectively. Key words: Acrylic, Artificial teeth, Resin base, Resin tooth, Wear, Wear resistance.